90757145 has 8 divisors (see below), whose sum is σ = 108966600. Its totient is φ = 72567040.

The previous prime is 90757123. The next prime is 90757151. The reversal of 90757145 is 54175709.

It can be written as a sum of positive squares in 4 ways, for example, as 5914624 + 84842521 = 2432^2 + 9211^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 90757145 - 2¹⁰ = 90756121 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 90757099 and 90757108.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9185 + ... + 16305.

It is an arithmetic number, because the mean of its divisors is an integer number (13620825).

Almost surely, 2^90757145 is an apocalyptic number.

It is an amenable number.

90757145 is a deficient number, since it is larger than the sum of its proper divisors (18209455).

90757145 is a wasteful number, since it uses less digits than its factorization.

90757145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9675.

The product of its (nonzero) digits is 44100, while the sum is 38.

The square root of 90757145 is about 9526.6544494907. The cubic root of 90757145 is about 449.3936607392.

The spelling of 90757145 in words is "ninety million, seven hundred fifty-seven thousand, one hundred forty-five".